"The Windows 7 Upgrade Program is designed to assist Microsoft's OEM partners in minimizing the number of end users who may postpone acquiring a new computer because of the impending release of the Windows 7 operating system."
Educational licence probably wont qualify?
"The Program does not support multiple upgrades for medium, large, or enterprise customers. Customers that want to upgrade multiple PCs should use the appropriate Microsoft Volume Licensing program."
program eligibility will begin on July 1, 2009.
"Microsoft is targeting an April '09 release of their Release Candidate (RC) build. If tests of the RC build proceeds according to plan, Microsoft is confident of launching Windows 7 before the December '09 holiday season."